Eyeglass-mounting.



A. BADER.

EYEGLASS MOUNTING.

APPLICATION FILED FEBJ, 1912.

v1,O 8 ,.":325. Patented Apr. 8, 1913.

GUSTAV A. BADER, OF ROCHESTER, NEW YORK.

EYEGLASS-MOUN'IING.

Specification of Letters Patent.

Patented Apr. 8, 1913.

Application filed. February 1, 1912. Serial No. 674,826.

To all whom it may concern Be it known that I, GUSTAV A. BADER, a citizen of the United States, and resident of Rochester, in the county of Monroe and State of New York, have invented certain new and useful Improvements in Eyeglass- Mountings, of which the following is a specificat-ion.

This invention relates to eyeglassrmountings of the type in which the nose-clamps or guards are carried by pivotally movable spring-controlled levers.

The object of the invention is to provide an eyeglass-mounting of the type in question with a nose-guard spring, and a support therefor, of simple, convenient and inexpensive form; and to this end I employ a construction in which the spring is mounted on a post or support to which it is fixed in a novel manner, and the spring is provided with an end-portion or head adapted not only to fix the spring on the post but also, in

the most complete embodiment of the inven-' tion, to'serve as a guard or cover for the coiled portion of the spring.

In the accompanying drawings :F igure 1 is a plan-view, on a greatly enlarged scale, of a portion of an eyeglass-mounting embodying the present invention; Fig. 2 is a front-elevation of the same, partly in vertical section; Fig. 3 is a plan-view of a portion of the blank from which is formed the nose-clamp spring shown in use in Figs. 1 and 2; Fig. 4 is a plan-view, showing a modified form of the mounting; Fig. 5 is a vertical section, on the line 55 in Fig. 4, showing in detail the form of the noseclamp spring and the post upon which it is mounted; and Fig. 6 is a plan-view of a por-' tion of the blank from which isconstructed the spring of Figs. 4 and 5.

The drawings illustrate one-half of an eyeglass mounting, of which the general form is familiar, this mounting including the usual lens-clips 8 and lens-straps 9, by which the lens 10 is secured in place, together With a wide body-portion 7, integral with these parts and with a rigid bridge 11 by which the body-portions are connected. The mounting is also provided with the usual nose-clamp levers 12, having at their forward ends finger-pieces 13, and carrying the nose-clamps 1 1 at their rear ends. Each lever is pivoted on the upper surface of one of the body-portions 7 by means of a post or stud 15 securely riveted, or otherwise fixed,

the plane of the spiral, as shown in Fig. 2

on the body. The nose-clamp lever is confined against the body by means of a flange 16 integral with the post 15, and the portion 17 of the post projecting above this flange constitutes a support for the spring by which the nose-clamp lever is controlled. This spring has a resilient portion 19 in the form of a fiat spiral. It is constructed from a blank such as that illustrated in Fig. 3, which may be punched or otherwise formed from resilient sheet-metal, the spiral portion being in the form of a narrow strip so coiled that the width of the metal lies normal to thus producing a compact but highlyresilient spring. The outer end of the coiled portion is provided with a hook 21, Which engages the nose-clamp lever at a convenient point.

The form and construction of the noseclamp spring, as so far described, are not novel, but the present invention resides particularly in the construction and arrangement bywhich the spring is fixed t0 the post 17 To this end the post is flattened at opposite points, as ShOWn in Fig. 1, thus producing two opposite bearing-surfaces 18, and also producing two overhanging lugs 24 at the upper or outer extremity of the post. The spring-blank, as shown in Fig. 3, is provided, at its inner extremity, with a portion projecting from one edge of the coil-portion at rightangles thereto, and terminating in a head 20 of nearly circular form. This head 20, in the formation of the spring, is bent at a right angle to the coiled portion of the blank, so that in the finished spring it lies parallel to the plane of the spiral, as shown in Figs. 1 and 2. The head 20 is provided centrally wit-h a circular perforationwhich passes closely but freely over the circular extremity of the spring-post. After the spring has been so placed in position, however, pressure is applied edgewise to the head 20 on opposite sides of the perforation, thus bending or upsetting the material, so that the shape of the perforation is modified, the metal being forced inwardly into close engagement with the surfaces 18. In this manner the metal of the head is not only forced into interlocking engagement with the lugs 24, so as to retain the spring permanently upon the post, but the spring is also locked against rotation on the post,

thus dispensing with any further anchorage to hold the spring against the tension to which it is subjected in operation. In order that the head 20 may be symmetrical or substantially circular in form, in its final condition, it is made originally somewhat elongated or oval, as shown in Fig. 3, to compensate for the distortion of its outline when bent as above described.

I am aware that nose-guard springs have previously been employed in which a flat, spiral coil terminates at its inner end in a flat washer or head engaging a screw or other support, but a novel and valuable feature of the present arrangement resides in the location of this head at the upper or outer side ofthe coiled portion of the spring. By this arrangement the head may be made to partly or wholly cover and inclose the coiled port-ion, thus excluding dirt which tends to accumulate within the coils of the spring, and also producing a neat and finished appearance in the mounting.

Where it is considered desirable that the spring be readily removable and replaceable for the purpose of repair or adjustment, I may substitute, for the construction shown in Figs. 1,2 and 3, the modified form shown in Figs. 4, 5 and 6. In this form of the device the head 25 is not permanently locked to the post, but is provided originally with an elongated opening having straight sides, as shown in Fig. 6. The post, in addition to being flattened on opposite sides, thus producing the surfaces 18 as previously described, is also provided with flattened portions 23, which are at a slight angle to the surfaces 18, as shown in Figs. 4 and 5, thus producing overhanging portions or lugs 26 at the extremity of the post. The porfo '2 tion in the head 25 permits it to be passed freely over the upper or outer extremity of the spring-post until it is opposite the flattened points 23. When the spring is thereafter subjected to tension by engagement of its hook 21 with the nose-clamp lever, the head turns upon the post until the straight sides of the perforation engage the surfaces 23. By this engagement further rotation of the head is prevented, and at the same time the head is interlocked with the lugs 26, as shown in Fig. 4, so that the spring is secured against longitudinal movement on the post, being thus retained upon the post so long as the spring is subjected to the tension of use. The spring may, however, be readily unlocked to permit its removal, by disengaging its end from the nose-clamp lever and turning the head 24 to a position in which it is disengaged from the lugs 26.

In the form of the spring last described provision is made for entirely covering the coiled portion of the spring with the head. To this end the head is made of sufficient diameter for this purpose, as shown in Fig. 6, while the shank-portion 22 of the blank is made longer than in Fig. 3. In forming the spring from the blank this shank-portion is doubled back, as shown in Fig. 5, thus bringing the inner end of the coiled portion close to the spring-post.

Certain features of the invention herein shown and described are embodied in an eyeglass-mounting disclosed in a co-pcnding application filed by me of even date herewith, Serial No. 674,825 and are not, therefore, claimed herein.

My invention is not limited to the embodi ment thereof hereinbefore described and illustrated in the accompanying drawings, but may be embodied in various other forms within the nature of the invention as it is defined in the following claims.

I claim 1. In an eyeglass-mounting, the combination, with the body of the mounting and a nose-guard lever pivoted thereon, of a post projecting from said body and having a portion of a non-circular form in cross-section, and a nose-guard spring mounted on the post, the spring comprising a resilient coil and a head at one end of the coil, and the head being provided with an opening similar in form to the non-circular portion of the post, and being engaged with the post at such portion, whereby the spring is held against rotation on the post.

2. In an eyeglass-mounting, the combination, with the body of the mounting, of a post projecting from said body and having a flattened lateral portion and an overhanging portion at its upper end, and a noseguard lever mounted on the post, the spring comprising a resilient coil and a head at one end of the coil, and the head being provided with an opening substantially conforming to the flattened portion of the post, and being retained upon the post by engagement with the overhanging portion thereof.

3. In an eyeglass-mounting, the combina tion, with the body of the mounting and a nose-guard lever pivoted thereon, of a post projecting from said body and having a lateral flattened portion and a lug at its upper end overhanging said flattened portion, and a nose-guard spring comprising a resilient coil and a head at one end of the coil, said head being perforated to freely admit the end of the post and having a straight surface adapted to cooperate with the flattened surface of the post, whereby rotation of the head upon the post is limited, said head being normally retained against longitudinal movement on the post by interlocking engagement with said lug.

4. In an eyeglass-mounting, the combination, with the body of the mounting and a nose-guard lever pivoted thereon, of a noseguard spring comprising a coiled portion and a head outside of the coiled portion and means for fixing the spring both against rotation of said head and against removal from the mounting, said means including a post projecting from the body and through the coiled portion and the head of the spring, and the post having an interlocking engagement with the head.

5. In an eyeglass-mounting, the combination, with the body of the mounting and a nose-guard lever pivoted thereon, of a post projecting from said body, and a nose-guard spring mounted on said post, the spring comprising a coiled portion, surrounding the post, and a head outside of the coiled portion and engaging the post near its outer end, said post and head having cooperating surfaces adapted to restrict rotation of the head upon the post.

6. In an eyeglass-mounting, the combination, with the body of the mounting and a nose-guard lever pivoted thereon, of a post projecting from said body, and a nose-guard spring mounted on said post, the spring comprising a coiled portion, surrounding the post and head outside of the coiled portion and engaging the post near its outer end, said post and head having cooperating surfaces adapted to prevent both rotative and longitudinal movement of the head upon the post.

7. In an eyeglass-mounting, the combination, With the body of the mounting and a nose-guard lever pivoted thereon, of a post projecting from said body, and a nose-guard '8. In an eyeglass-mounting, the combination, with the body of the mounting and a nose-guard lever pivoted thereon, of a post projecting from said body and provided with a non-circular portion and a transversely-projecting lug or overhanging portion, and a nose-guard spring engaging the nose-guard lever at one end and having, at the other end, a head provided with a noncircular opening whereby the head is normally held nonrotatively on the non-circular portion of the post and is held, by its torsional action, in interlocking relation with said lug, but may be released from the post upon turning the head into position to disengaging the lug.

GUSTAV A. BADER. Witnesses:

FARNUM F. DoRsEY, D, GURNEE.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. G.

Corrections in Letters Patent No. l,058,525

It is hereby certified that in Letters Patent No. 1,058,525, granted April 8, 1913, upon the application of Gustav A. Bader, of Rochester, New York, for an improvement in Eyeglass-Mountings, errors appear in the printed specification requiring correction as follows: Page 2, line 128, after the Word portion insert a semi-colon; page 3, line 40, strike out the word spring; and that the said 1 Letters Patent should be read with these corrections therein that the same may conform to the record of the case in the Patent Oflice.

si ma and sealed this 29th day of April, A. 11,1913.

0. OQBILLINGs,

Acting Commissioner of Patents.

[SEAL] 

